Note 2 - Investments - Gross Unrealized Losses (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Available-for-sale securities, less than 12 months, fair value	$ 25,051,879	$ 11,204,534
Available-for-sale securities, less than 12 months, unrealized loss	(2,740,653)	(283,345)
Available-for-sale securities, greater than 12 months, fair value	3,760,662	0
Available-for-sale securities, greater than 12 months, unrealized loss	(1,054,884)	0
Available-for-sale securities, fair value	28,812,541	11,204,534
Debt Securities, Gross Unrealized Loss	(3,795,537)	(283,345)
Available-for-sale securities, greater than 12 months, unrealized loss	1,054,884	(0)
Corporate Debt Securities [Member]
Available-for-sale securities, less than 12 months, fair value	13,035,236	4,496,456
Available-for-sale securities, less than 12 months, unrealized loss	(1,427,669)	(177,700)
Available-for-sale securities, greater than 12 months, fair value	2,833,974	0
Available-for-sale securities, greater than 12 months, unrealized loss	(917,218)	0
Available-for-sale securities, fair value	15,869,210	4,496,456
Debt Securities, Gross Unrealized Loss	(2,344,887)	(177,700)
Available-for-sale securities, greater than 12 months, unrealized loss	917,218	(0)
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, less than 12 months, fair value	4,072,408	927,122
Available-for-sale securities, less than 12 months, unrealized loss	(374,802)	(14,292)
Available-for-sale securities, greater than 12 months, fair value	96,376	0
Available-for-sale securities, greater than 12 months, unrealized loss	(11,707)	0
Available-for-sale securities, fair value	4,168,784	927,122
Debt Securities, Gross Unrealized Loss	(386,509)	(14,292)
Available-for-sale securities, greater than 12 months, unrealized loss	11,707	0
Redeemable Preferred Stock [Member]
Available-for-sale securities, less than 12 months, fair value	3,548,532	1,394,650
Available-for-sale securities, less than 12 months, unrealized loss	(495,473)	(21,094)
Available-for-sale securities, greater than 12 months, fair value	0	0
Available-for-sale securities, greater than 12 months, unrealized loss	0	0
Available-for-sale securities, fair value	3,548,532	1,394,650
Debt Securities, Gross Unrealized Loss	(495,473)	(21,094)
Available-for-sale securities, greater than 12 months, unrealized loss	(0)	(0)
Collateralized Mortgage-Backed Securities [Member]
Available-for-sale securities, less than 12 months, fair value	4,395,703	4,386,306
Available-for-sale securities, less than 12 months, unrealized loss	(442,709)	(70,259)
Available-for-sale securities, greater than 12 months, fair value	830,312	0
Available-for-sale securities, greater than 12 months, unrealized loss	(125,959)	0
Available-for-sale securities, fair value	5,226,015	4,386,306
Debt Securities, Gross Unrealized Loss	(568,668)	(70,259)
Available-for-sale securities, greater than 12 months, unrealized loss	$ 125,959	$ (0)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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